Finding the Fourth Proportional to 78,561.96, 108,415.40 and 42,751.92

Step by Step Solution

1. Step 1: Write the proportion equation
   78,561.96 : 108,415.40 = 42,751.92 : x
2. Step 2: Convert to fraction form
   78,561.96/108,415.40 = 42,751.92/x
3. Step 3: Cross multiply
   78,561.96x = 108,415.40 × 42,751.92
4. Step 4: Simplify right side
   78,561.96x = 4,634,966,507.57
5. Step 5: Solve for x
   x = 4,634,966,507.57/78,561.96
6. Step 6: Final answer
   x = 58,997.59